高纯度的钒确的分子公式

Molecular Formula:V2O5Molecular Weight:181.88(as per International Atomic Weight in 1975)Alias:Vanadic acid anhydrideEnglish Name:Vanadic acid anhydride;Vanadium pentoxideAppearance:Yellow or brick-red powderQuality Standard:Chemical Industry Standard HG/T 3485-2003Technical Conditions: 1. V2O5 Content Min:Guaranteed reagent `````````````````````````99.5% Analytical pure,Chemically pure `````````````````99.0%2.The highest content of impurities (%):NameGuaranteed reagentAnalytical pureChemically pure1.HCI insoluble substance & Silicate0.10.20.32.Causis weightlessness0.10.150.253.Chloride(CL)0.0050.010.024.Sulfate(SO4)0.010.020.045.Ammonium Salt (NH4)0.020.050.106.Sodium (Na)0.020.040.107.Ferrum (Fe)0.010.020.038.Heavy metal(Pb)0.0020.0050.010USE:High purity V2O5 is used for metallurgical industry,FeV Alloy,Vanadium Aluminium Alloy and other special metal materials,it is used for decarburization and desulfuration in chemical fertilizer industry.It is also used for coloring materials of staining,ceramic and corrosioninhibitor of petrochemical complex device,and it can be used to make sulfuric acid and organic synthesis’catalyst,also for glass industry.Packing:50kg iron drums lined with plastic bags or as request.Carry and Storage:It should be keeped in shady and dry storeroom.Do not mix with acid and alkali.Attention to guard against damp.Do not give it heavy load,do not mix loading with sharp implement.During transportation,it should be guarded against rain and solar exposure,handle with care when loading and unloading,,avoiding from packages in damaged.It can be saved by water,sands and all kinds of fire extinguisher if it were in fire.Materialization Property: Yellowish red prismatic crystal powder.Relative density 3.357. Melting point 690°C.Soluble in acid and alkali,slightly dissolve in water,not in absolute ethyl alcohol.The steam of V2O5 is toxic.Toxicity protection:this product is a poison which has many influences for organism.Early symptoms of acute poisoning,such as tears, running at the nose, throat pain in the chest, difficulty breathing.Acute allergic reaction is bronchial asthma, bronchus asthma, acute rhinitis and nosebleed.It has strong stimulation for eye mucosa,which is often with conjunctivitis,skin rash and eczema.The maximum permissible concentration smog is 0.1mg/m3, and 0.5mg/m3 for dust.In America,the rule is 0.05mg/m3.Use a respirator to protect the respiratory organ and to prevent dust and excretion in production.Strictly make sure its closeness and isolation.It should be needed to have a full ventilation equipment and local site masking equipment.Make the material wetted before smashing.Wear closed glasses and rubber gloves when operating,and wear dustproof clothes.